Jack, the pseudo-RIP transmissions are inside IPIP encapsulated packets from amprgw, 169.228.34.84. They are addressed to the standard RIP multicast address, 224.0.0.9 on port 520, and with source address 44.0.0.1, port 520. - Brian Here is a typical tcpdump capture of a pseudo-RIP packet: 09:06:36.972819 IP (tos 0x0, ttl 64, id 34359, offset 0, flags [none], proto IPIP (4), length 552) 169.228.34.84 > 24.34.225.54: IP (tos 0x0, ttl 255, id 0, offset 0, flags [none], proto UDP (17), length 532) 44.0.0.1.520 > 224.0.0.9.520: RIPv2, Response, length: 504, routes: 25 or less Simple Text Authentication data: pLaInTeXtpAsSwD. AFI IPv4, 44.0.0.1/32, tag 0x0004, metric: 1, next-hop: 169.228.34.84 AFI IPv4, 44.2.0.1/32, tag 0x0004, metric: 1, next-hop: 191.183.136.1 AFI IPv4, 44.2.2.0/24, tag 0x0004, metric: 1, next-hop: 216.218.207.198 AFI IPv4, 44.2.7.0/30, tag 0x0004, metric: 1, next-hop: 73.116.117.178 AFI IPv4, 44.2.10.0/29, tag 0x0004, metric: 1, next-hop: 104.49.12.130 AFI IPv4, 44.2.50.0/29, tag 0x0004, metric: 1, next-hop: 50.63.202.93 AFI IPv4, 44.4.2.152/29, tag 0x0004, metric: 1, next-hop: 173.167.109.217 AFI IPv4, 44.4.2.160/29, tag 0x0004, metric: 1, next-hop: 70.90.167.65 AFI IPv4, 44.4.2.168/29, tag 0x0004, metric: 1, next-hop: 76.218.13.157 AFI IPv4, 44.4.10.40/29, tag 0x0004, metric: 1, next-hop: 96.78.144.186 AFI IPv4, 44.4.12.0/24, tag 0x0004, metric: 1, next-hop: 173.164.225.173 AFI IPv4, 44.4.16.0/27, tag 0x0004, metric: 1, next-hop: 208.80.117.58 AFI IPv4, 44.4.16.32/27, tag 0x0004, metric: 1, next-hop: 67.174.250.232 AFI IPv4, 44.4.21.0/29, tag 0x0004, metric: 1, next-hop: 173.228.105.82 AFI IPv4, 44.4.28.50/32, tag 0x0004, metric: 1, next-hop: 50.79.209.150 AFI IPv4, 44.4.38.27/32, tag 0x0004, metric: 1, next-hop: 69.181.181.170 AFI IPv4, 44.4.39.0/29, tag 0x0004, metric: 1, next-hop: 73.252.222.100 AFI IPv4, 44.4.39.8/29, tag 0x0004, metric: 1, next-hop: 104.193.168.69 AFI IPv4, 44.4.50.1/32, tag 0x0004, metric: 1, next-hop: 146.74.60.92 AFI IPv4, 44.4.50.2/32, tag 0x0004, metric: 1, next-hop: 199.103.53.117 AFI IPv4, 44.4.50.3/32, tag 0x0004, metric: 1, next-hop: 50.193.38.153 AFI IPv4, 44.4.50.4/32, tag 0x0004, metric: 1, next-hop: 50.59.22.74 AFI IPv4, 44.4.50.5/32, tag 0x0004, metric: 1, next-hop: 23.202.231.167 AFI IPv4, 44.4.50.6/32, tag 0x0004, metric: 1, next-hop: 173.167.109.219 On Thu, Aug 01, 2019 at 08:51:05AM -0700, Jack Eifer via 44Net wrote: