Since Jan 17th LibreNMS has been alarming about not receiving prefixes for a number of IPv6 Anycast peers on different routers. But all seem to be ok. Error is reported for eqiad, codfw and ulsfo, yet checking the actual sessions all seems to be ok and we are learning routes from all the hosts listed.
For instance the ones reported for //cr1-codfw//:
```
2025-01-17 17:47:13 Not accepting/receiving prefixes from anycast BGP peer cr1-codfw
#1: BGP peer 2620:0:860:1:208:80:153:6, Desc , AS64605, State established
#2: BGP peer 2620:0:860:2:208:80:153:38, Desc , AS64605, State established
#3: BGP peer 2620:0:860:103:10:192:32:58, Desc , AS64605, State established
#4: BGP peer 2620:0:860:104:10:192:48:14, Desc , AS64605, State established
```
```
cmooney@re0.cr1-codfw> show route table inet6.0 receive-protocol bgp 2620:0:860:1:208:80:153:6
inet6.0: 214772 destinations, 548752 routes (214766 active, 0 holddown, 6 hidden)
Restart Complete
Prefix Nexthop MED Lclpref AS path
2001:67c:930::1/128 2620:0:860:1:208:80:153:6 64605 I
{master}
cmooney@re0.cr1-codfw> show route table inet6.0 receive-protocol bgp 2620:0:860:2:208:80:153:38
inet6.0: 214776 destinations, 548760 routes (214768 active, 2 holddown, 6 hidden)
Restart Complete
Prefix Nexthop MED Lclpref AS path
* 2001:67c:930::1/128 2620:0:860:2:208:80:153:38 64605 I
{master}
cmooney@re0.cr1-codfw> show route table inet6.0 receive-protocol bgp 2620:0:860:103:10:192:32:58
inet6.0: 214779 destinations, 548755 routes (214766 active, 7 holddown, 6 hidden)
Restart Complete
Prefix Nexthop MED Lclpref AS path
* 2001:67c:930::2/128 2620:0:860:103:10:192:32:58 64605 I
* 2001:67c:930::3/128 2620:0:860:103:10:192:32:58 64605 I
* 2001:67c:930::4/128 2620:0:860:103:10:192:32:58 64605 I
* 2001:67c:930::5/128 2620:0:860:103:10:192:32:58 64605 I
{master}
cmooney@re0.cr1-codfw> show route table inet6.0 receive-protocol bgp 2620:0:860:104:10:192:48:14
inet6.0: 214775 destinations, 548729 routes (214767 active, 2 holddown, 6 hidden)
Restart Complete
Prefix Nexthop MED Lclpref AS path
2001:67c:930::2/128 2620:0:860:104:10:192:48:14 64605 I
2001:67c:930::3/128 2620:0:860:104:10:192:48:14 64605 I
2001:67c:930::4/128 2620:0:860:104:10:192:48:14 64605 I
2001:67c:930::5/128 2620:0:860:104:10:192:48:14 64605 I
```
Need to dig in and see why it's reporting this, very odd. SNMP seems to match what we see above too:
```
root@alert1002:~# snmpwalk -v2c -c <comm> -M +/var/lib/mibs/site -M +BGP4-V2-MIB-JUNIPER cr1-codfw BGP4-V2-MIB-JUNIPER::jnxBgpM2PeerRemoteAddr | egrep "53 00 06|53 00 38"
BGP4-V2-MIB-JUNIPER::jnxBgpM2PeerRemoteAddr.0.ipv6.38.32.0.0.8.96.255.255.0.0.0.0.0.0.0.1.2.38.32.0.0.8.96.0.1.2.8.0.128.1.83.0.6 = Hex-STRING: 26 20 00 00 08 60 00 01 02 08 00 80 01 53 00 06
BGP4-V2-MIB-JUNIPER::jnxBgpM2PeerRemoteAddr.0.ipv6.38.32.0.0.8.96.255.255.0.0.0.0.0.0.0.1.2.38.32.0.0.8.96.0.2.2.8.0.128.1.83.0.56 = Hex-STRING: 26 20 00 00 08 60 00 02 02 08 00 80 01 53 00 38
```
```
root@alert1002:~# snmpget -v2c -c <comm> -M +/var/lib/mibs/site -M +BGP4-V2-MIB-JUNIPER cr1-codfw BGP4-V2-MIB-JUNIPER::jnxBgpM2PeerIndex.0.ipv6.38.32.0.0.8.96.255.255.0.0.0.0.0.0.0.1.2.38.32.0.0.8.96.0.1.2.8.0.128.1.83.0.6
BGP4-V2-MIB-JUNIPER::jnxBgpM2PeerIndex.0.ipv6.38.32.0.0.8.96.255.255.0.0.0.0.0.0.0.1.2.38.32.0.0.8.96.0.1.2.8.0.128.1.83.0.6 = Gauge32: 84
```
```
root@alert1002:~# snmpget -v2c -c <comm> -M +/var/lib/mibs/site -M +BGP4-V2-MIB-JUNIPER cr1-codfw BGP4-V2-MIB-JUNIPER::jnxBgpM2PeerIndex.0.ipv6.38.32.0.0.8.96.255.255.0.0.0.0.0.0.0.1.2.38.32.0.0.8.96.0.2.2.8.0.128.1.83.0.56
BGP4-V2-MIB-JUNIPER::jnxBgpM2PeerIndex.0.ipv6.38.32.0.0.8.96.255.255.0.0.0.0.0.0.0.1.2.38.32.0.0.8.96.0.2.2.8.0.128.1.83.0.56 = Gauge32: 85
```
```
root@alert1002:~# snmpwalk -v2c -c <comm> -M +/var/lib/mibs/site -M +BGP4-V2-MIB-JUNIPER cr1-codfw BGP4-V2-MIB-JUNIPER::jnxBgpM2PrefixInPrefixesAccepted.84
BGP4-V2-MIB-JUNIPER::jnxBgpM2PrefixInPrefixesAccepted.84.ipv6.1 = Gauge32: 1
```
```
root@alert1002:~# snmpwalk -v2c -c <comm> -M +/var/lib/mibs/site -M +BGP4-V2-MIB-JUNIPER cr1-codfw BGP4-V2-MIB-JUNIPER::jnxBgpM2PrefixInPrefixesAccepted.85
BGP4-V2-MIB-JUNIPER::jnxBgpM2PrefixInPrefixesAccepted.85.ipv6.1 = Gauge32: 1
```