Paul said:
To watch the traffic, get and install Wireshark.
In the "View" menu, remember to turn on symbolic
translation of all three items for the IP addresses.
This is to make the log easier to read.
Couldn't find that option.
Here is the capture data from Xnews' failed attempt to read the newsrc
files:
Frame 1: 76 bytes on wire (608 bits), 76 bytes captured (608 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
192.168.0.1 (192.168.0.1)
User Datagram Protocol, Src Port: 2194 (2194), Dst Port: domain (53)
Domain Name System (query)
No. Time Source Destination
Protocol Length Info
2 0.029927000 192.168.0.1 192.168.0.2 DNS
92 Standard query response 0xd9c3 A 98.100.194.170
Frame 2: 92 bytes on wire (736 bits), 92 bytes captured (736 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 192.168.0.1 (192.168.0.1), Dst:
192.168.0.2 (192.168.0.2)
User Datagram Protocol, Src Port: domain (53), Dst Port: 2194 (2194)
Domain Name System (response)
No. Time Source Destination
Protocol Length Info
3 0.037305000 192.168.0.2 192.168.0.1 DNS
79 Standard query 0x97e2 A news.individual.net
Frame 3: 79 bytes on wire (632 bits), 79 bytes captured (632 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
192.168.0.1 (192.168.0.1)
User Datagram Protocol, Src Port: 2195 (2195), Dst Port: domain (53)
Domain Name System (query)
No. Time Source Destination
Protocol Length Info
4 0.038982000 192.168.0.2 98.100.194.170 TCP
62 mnp-exchange > nntp [SYN] Seq=0 Win=65535 Len=0 MSS=1460
SACK_PERM=1
Frame 4: 62 bytes on wire (496 bits), 62 bytes captured (496 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
98.100.194.170 (98.100.194.170)
Transmission Control Protocol, Src Port: mnp-exchange (2197), Dst Port:
nntp (119), Seq: 0, Len: 0
No. Time Source Destination
Protocol Length Info
5 0.067195000 192.168.0.1 192.168.0.2 DNS
95 Standard query response 0x97e2 A 130.133.4.11
Frame 5: 95 bytes on wire (760 bits), 95 bytes captured (760 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 192.168.0.1 (192.168.0.1), Dst:
192.168.0.2 (192.168.0.2)
User Datagram Protocol, Src Port: domain (53), Dst Port: 2195 (2195)
Domain Name System (response)
No. Time Source Destination
Protocol Length Info
6 0.069410000 192.168.0.2 130.133.4.11 TCP
62 onehome-help > nntp [SYN] Seq=0 Win=65535 Len=0 MSS=1460
SACK_PERM=1
Frame 6: 62 bytes on wire (496 bits), 62 bytes captured (496 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
130.133.4.11 (130.133.4.11)
Transmission Control Protocol, Src Port: onehome-help (2199), Dst Port:
nntp (119), Seq: 0, Len: 0
No. Time Source Destination
Protocol Length Info
7 0.152706000 98.100.194.170 192.168.0.2 TCP
62 nntp > mnp-exchange [SYN, ACK] Seq=0 Ack=1 Win=16384 Len=0 MSS=
1452 SACK_PERM=1
Frame 7: 62 bytes on wire (496 bits), 62 bytes captured (496 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 98.100.194.170 (98.100.194.170), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: mnp-
exchange (2197), Seq: 0, Ack: 1, Len: 0
No. Time Source Destination
Protocol Length Info
8 0.152794000 192.168.0.2 98.100.194.170 TCP
54 mnp-exchange > nntp [ACK] Seq=1 Ack=1 Win=65535 Len=0
Frame 8: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
98.100.194.170 (98.100.194.170)
Transmission Control Protocol, Src Port: mnp-exchange (2197), Dst Port:
nntp (119), Seq: 1, Ack: 1, Len: 0
No. Time Source Destination
Protocol Length Info
9 0.263941000 130.133.4.11 192.168.0.2 TCP
62 nntp > onehome-help [SYN, ACK] Seq=0 Ack=1 Win=14600 Len=0 MSS=
1452 SACK_PERM=1
Frame 9: 62 bytes on wire (496 bits), 62 bytes captured (496 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 130.133.4.11 (130.133.4.11), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: onehome-
help (2199), Seq: 0, Ack: 1, Len: 0
No. Time Source Destination
Protocol Length Info
10 0.264055000 192.168.0.2 130.133.4.11 TCP
54 onehome-help > nntp [ACK] Seq=1 Ack=1 Win=65535 Len=0
Frame 10: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
130.133.4.11 (130.133.4.11)
Transmission Control Protocol, Src Port: onehome-help (2199), Dst Port:
nntp (119), Seq: 1, Ack: 1, Len: 0
No. Time Source Destination
Protocol Length Info
11 0.267921000 98.100.194.170 192.168.0.2 NNTP
95 Response: 200 Optimax-NNTP, Optimax-Hamster V1.24
Frame 11: 95 bytes on wire (760 bits), 95 bytes captured (760 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 98.100.194.170 (98.100.194.170), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: mnp-
exchange (2197), Seq: 1, Ack: 1, Len: 41
Network News Transfer Protocol
No. Time Source Destination
Protocol Length Info
12 0.271780000 192.168.0.2 98.100.194.170 NNTP
67 Request: MODE READER
Frame 12: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
98.100.194.170 (98.100.194.170)
Transmission Control Protocol, Src Port: mnp-exchange (2197), Dst Port:
nntp (119), Seq: 1, Ack: 42, Len: 13
Network News Transfer Protocol
No. Time Source Destination
Protocol Length Info
13 0.386297000 98.100.194.170 192.168.0.2 NNTP
67 Response: 200 ignored
Frame 13: 67 bytes on wire (536 bits), 67 bytes captured (536 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 98.100.194.170 (98.100.194.170), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: mnp-
exchange (2197), Seq: 42, Ack: 14, Len: 13
Network News Transfer Protocol
No. Time Source Destination
Protocol Length Info
14 0.388486000 192.168.0.2 98.100.194.170 NNTP
81 Request: GROUP sdforum.newsreaders
Frame 14: 81 bytes on wire (648 bits), 81 bytes captured (648 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
98.100.194.170 (98.100.194.170)
Transmission Control Protocol, Src Port: mnp-exchange (2197), Dst Port:
nntp (119), Seq: 14, Ack: 55, Len: 27
Network News Transfer Protocol
No. Time Source Destination
Protocol Length Info
15 0.461482000 130.133.4.11 192.168.0.2 NNTP
175 Response: 200 The server welcomes 184-98-134-233.phnx.qwest.net
(184.98.134.233). Authorization required for reading and posting.
Frame 15: 175 bytes on wire (1400 bits), 175 bytes captured (1400 bits)
on interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 130.133.4.11 (130.133.4.11), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: onehome-
help (2199), Seq: 1, Ack: 1, Len: 121
Network News Transfer Protocol
No. Time Source Destination
Protocol Length Info
16 0.504541000 98.100.194.170 192.168.0.2 NNTP
89 Response: 211 176 1 176 sdforum.newsreaders
Frame 16: 89 bytes on wire (712 bits), 89 bytes captured (712 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 98.100.194.170 (98.100.194.170), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: mnp-
exchange (2197), Seq: 55, Ack: 41, Len: 35
Network News Transfer Protocol
No. Time Source Destination
Protocol Length Info
17 0.652692000 192.168.0.2 130.133.4.11 TCP
54 onehome-help > nntp [ACK] Seq=1 Ack=122 Win=65414 Len=0
Frame 17: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
130.133.4.11 (130.133.4.11)
Transmission Control Protocol, Src Port: onehome-help (2199), Dst Port:
nntp (119), Seq: 1, Ack: 122, Len: 0
No. Time Source Destination
Protocol Length Info
18 0.652769000 192.168.0.2 98.100.194.170 TCP
54 mnp-exchange > nntp [ACK] Seq=41 Ack=90 Win=65446 Len=0
Frame 18: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
98.100.194.170 (98.100.194.170)
Transmission Control Protocol, Src Port: mnp-exchange (2197), Dst Port:
nntp (119), Seq: 41, Ack: 90, Len: 0
No. Time Source Destination
Protocol Length Info
19 5.028631000 Actionte_8f:86:00 Intel_5a:b1:0c ARP
60 Who has 192.168.0.2? Tell 192.168.0.1
Frame 19: 60 bytes on wire (480 bits), 60 bytes captured (480 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Address Resolution Protocol (request)
No. Time Source Destination
Protocol Length Info
20 5.028655000 Intel_5a:b1:0c Actionte_8f:86:00 ARP
42 192.168.0.2 is at 00:11:11:5a:b1:0c
Frame 20: 42 bytes on wire (336 bits), 42 bytes captured (336 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Address Resolution Protocol (reply)
No. Time Source Destination
Protocol Length Info
21 24.532861000 192.168.0.1 239.255.255.250 SSDP
385 NOTIFY * HTTP/1.1
Frame 21: 385 bytes on wire (3080 bits), 385 bytes captured (3080 bits)
on interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: IPv4mcast_
7f:ff:fa (01:00:5e:7f:ff:fa)
Internet Protocol Version 4, Src: 192.168.0.1 (192.168.0.1), Dst:
239.255.255.250 (239.255.255.250)
User Datagram Protocol, Src Port: ssdp (1900), Dst Port: ssdp (1900)
Hypertext Transfer Protocol
No. Time Source Destination
Protocol Length Info
22 24.533388000 192.168.0.1 239.255.255.250 SSDP
330 NOTIFY * HTTP/1.1
Frame 22: 330 bytes on wire (2640 bits), 330 bytes captured (2640 bits)
on interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: IPv4mcast_
7f:ff:fa (01:00:5e:7f:ff:fa)
Internet Protocol Version 4, Src: 192.168.0.1 (192.168.0.1), Dst:
239.255.255.250 (239.255.255.250)
User Datagram Protocol, Src Port: ssdp (1900), Dst Port: ssdp (1900)
Hypertext Transfer Protocol
No. Time Source Destination
Protocol Length Info
23 24.533882000 192.168.0.1 239.255.255.250 SSDP
321 NOTIFY * HTTP/1.1
Frame 23: 321 bytes on wire (2568 bits), 321 bytes captured (2568 bits)
on interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: IPv4mcast_
7f:ff:fa (01:00:5e:7f:ff:fa)
Internet Protocol Version 4, Src: 192.168.0.1 (192.168.0.1), Dst:
239.255.255.250 (239.255.255.250)
User Datagram Protocol, Src Port: ssdp (1900), Dst Port: ssdp (1900)
Hypertext Transfer Protocol
No. Time Source Destination
Protocol Length Info
24 24.534516000 192.168.0.1 239.255.255.250 SSDP
395 NOTIFY * HTTP/1.1
Frame 24: 395 bytes on wire (3160 bits), 395 bytes captured (3160 bits)
on interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: IPv4mcast_
7f:ff:fa (01:00:5e:7f:ff:fa)
Internet Protocol Version 4, Src: 192.168.0.1 (192.168.0.1), Dst:
239.255.255.250 (239.255.255.250)
User Datagram Protocol, Src Port: ssdp (1900), Dst Port: ssdp (1900)
Hypertext Transfer Protocol
No. Time Source Destination
Protocol Length Info
25 25.511982000 192.168.0.2 130.133.4.11 TCP
54 onehome-help > nntp [FIN, ACK] Seq=1 Ack=122 Win=65414 Len=0
Frame 25: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
130.133.4.11 (130.133.4.11)
Transmission Control Protocol, Src Port: onehome-help (2199), Dst Port:
nntp (119), Seq: 1, Ack: 122, Len: 0
No. Time Source Destination
Protocol Length Info
26 25.512344000 192.168.0.2 98.100.194.170 TCP
54 mnp-exchange > nntp [FIN, ACK] Seq=41 Ack=90 Win=65446 Len=0
Frame 26: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
98.100.194.170 (98.100.194.170)
Transmission Control Protocol, Src Port: mnp-exchange (2197), Dst Port:
nntp (119), Seq: 41, Ack: 90, Len: 0
No. Time Source Destination
Protocol Length Info
27 25.625361000 98.100.194.170 192.168.0.2 TCP
60 nntp > mnp-exchange [ACK] Seq=90 Ack=42 Win=65495 Len=0
Frame 27: 60 bytes on wire (480 bits), 60 bytes captured (480 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 98.100.194.170 (98.100.194.170), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: mnp-
exchange (2197), Seq: 90, Ack: 42, Len: 0
No. Time Source Destination
Protocol Length Info
28 25.631541000 98.100.194.170 192.168.0.2 TCP
60 nntp > mnp-exchange [FIN, ACK] Seq=90 Ack=42 Win=65495 Len=0
Frame 28: 60 bytes on wire (480 bits), 60 bytes captured (480 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 98.100.194.170 (98.100.194.170), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: mnp-
exchange (2197), Seq: 90, Ack: 42, Len: 0
No. Time Source Destination
Protocol Length Info
29 25.631590000 192.168.0.2 98.100.194.170 TCP
54 mnp-exchange > nntp [ACK] Seq=42 Ack=91 Win=65446 Len=0
Frame 29: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
98.100.194.170 (98.100.194.170)
Transmission Control Protocol, Src Port: mnp-exchange (2197), Dst Port:
nntp (119), Seq: 42, Ack: 91, Len: 0
No. Time Source Destination
Protocol Length Info
30 25.706886000 130.133.4.11 192.168.0.2 NNTP
61 Response: 205 .
Frame 30: 61 bytes on wire (488 bits), 61 bytes captured (488 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 130.133.4.11 (130.133.4.11), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: onehome-
help (2199), Seq: 122, Ack: 2, Len: 7
Network News Transfer Protocol
No. Time Source Destination
Protocol Length Info
31 25.706980000 130.133.4.11 192.168.0.2 TCP
60 nntp > onehome-help [FIN, ACK] Seq=129 Ack=2 Win=14600 Len=0
Frame 31: 60 bytes on wire (480 bits), 60 bytes captured (480 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: Intel_
5a:b1:0c (00:11:11:5a:b1:0c)
Internet Protocol Version 4, Src: 130.133.4.11 (130.133.4.11), Dst:
192.168.0.2 (192.168.0.2)
Transmission Control Protocol, Src Port: nntp (119), Dst Port: onehome-
help (2199), Seq: 129, Ack: 2, Len: 0
No. Time Source Destination
Protocol Length Info
32 25.707012000 192.168.0.2 130.133.4.11 TCP
54 onehome-help > nntp [ACK] Seq=2 Ack=130 Win=65407 Len=0
Frame 32: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: Actionte_
8f:86:00 (10:5f:06:8f:86:00)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
130.133.4.11 (130.133.4.11)
Transmission Control Protocol, Src Port: onehome-help (2199), Dst Port:
nntp (119), Seq: 2, Ack: 130, Len: 0
No. Time Source Destination
Protocol Length Info
33 67.120560000 192.168.0.1 224.0.0.1 IGMPv3
60 Membership Query, general
Frame 33: 60 bytes on wire (480 bits), 60 bytes captured (480 bits) on
interface 0
Ethernet II, Src: Actionte_8f:86:00 (10:5f:06:8f:86:00), Dst: IPv4mcast_
00:00:01 (01:00:5e:00:00:01)
Internet Protocol Version 4, Src: 192.168.0.1 (192.168.0.1), Dst:
224.0.0.1 (224.0.0.1)
Internet Group Management Protocol
No. Time Source Destination
Protocol Length Info
34 69.060522000 192.168.0.2 224.0.0.22 IGMPv3
54 Membership Report / Join group 239.255.255.250 for any sources
Frame 34: 54 bytes on wire (432 bits), 54 bytes captured (432 bits) on
interface 0
Ethernet II, Src: Intel_5a:b1:0c (00:11:11:5a:b1:0c), Dst: IPv4mcast_
00:00:16 (01:00:5e:00:00:16)
Internet Protocol Version 4, Src: 192.168.0.2 (192.168.0.2), Dst:
224.0.0.22 (224.0.0.22)
Internet Group Management Protocol
Sorry, but makes no sense to me.
Ken