description ibgp with pmtud

addrouter r1
int eth1 eth 0000.0000.1111 $1a$ $1b$
!
vrf def v1
 rd 1:1
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.1 255.255.255.255
 ipv6 addr 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.252
 ipv6 addr 1234:1::1 ffff:ffff::
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 address uni
 local-as 1
 router-id 4.4.4.1
 neigh 1.1.1.2 remote-as 1
 neigh 1.1.1.2 ipinfo pmtud 512 1024 666
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address uni
 local-as 1
 router-id 6.6.6.1
 neigh 1234:1::2 remote-as 1
 neigh 1234:1::2 ipinfo pmtud 512 1024 666
 red conn
 exit
!

addrouter r2
int eth1 eth 0000.0000.2222 $1b$ $1a$
!
vrf def v1
 rd 1:1
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.2 255.255.255.255
 ipv6 addr 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.252
 ipv6 addr 1234:1::2 ffff:ffff::
 ipv4 bfd 100 100 3
 ipv6 bfd 100 100 3
 exit
router bgp4 1
 vrf v1
 no safe-ebgp
 address uni
 local-as 1
 router-id 4.4.4.2
 neigh 1.1.1.1 remote-as 1
 neigh 1.1.1.1 ipinfo pmtud 512 1024 666
 red conn
 exit
router bgp6 1
 vrf v1
 no safe-ebgp
 address uni
 local-as 1
 router-id 6.6.6.2
 neigh 1234:1::1 remote-as 1
 neigh 1234:1::1 ipinfo pmtud 512 1024 666
 red conn
 exit
!


r1 tping 100 60 2.2.2.2 vrf v1
r1 tping 100 60 4321::2 vrf v1
r2 tping 100 60 2.2.2.1 vrf v1
r2 tping 100 60 4321::1 vrf v1
