dhcpcd-discuss

Hello,

My first time on this list. I’m using dhcpcd on OpenBSD 6.8. It has two interfaces named em0 (WAN) and em1 (LAN). My provider is an Australian Telco and they have for about a year enabled IPv6 on their network. The link is a 4G Mobile Broadband network. My 4G modem is configured in Bridge mode , therefore my OpenBSD firewall has the public IP and it is a dual stack too. Being a 4G network my telco is only handing out /64 addresses.

Using dhcpcd I am unable to get an IPv6 address on em1 interface. It wants to add the IPv6 address to the em0 interface which I think I not the correct interface. Could someone please check the dhcpcd.conf listed below and confirm if I have the correct settings. Also I have provided output of my interfaces showing the IPv6 address on em0 interface. More information about the version of dhcpcd is listed too.

If more information is required then please let me know?

ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 32768
        index 4 priority 0 llprio 3
        groups: lo
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
        inet 127.0.0.1 netmask 0xff000000
em0: flags=808843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,AUTOCONF4> mtu 1500
        lladdr 00:e0:67:15:e7:82
        index 1 priority 0 llprio 3
        groups: egress
        media: Ethernet autoselect (1000baseT full-duplex,master,rxpause,txpause)
        status: active
        inet 22.230.33.40 netmask 0xffffff00 broadcast 22.230.33.255
        inet6 fe80::2e0:67ff:fe15:e782%em0 prefixlen 64 scopeid 0x1
        inet6 2001:8004:1480:45c9:2e0:67ff:fe15:e782 prefixlen 64 autoconf
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        lladdr 00:e0:67:15:e7:83
        index 2 priority 0 llprio 3
        media: Ethernet autoselect (1000baseT full-duplex,rxpause,txpause)
        status: active
        inet 10.99.1.1 netmask 0xffffff00 broadcast 10.99.1.255
        inet6 fe80::2e0:67ff:fe15:e783%em1 prefixlen 64 scopeid 0x2
enc0: flags=0<>
        index 3 priority 0 llprio 3
        groups: enc
        status: active
pflog0: flags=141<UP,RUNNING,PROMISC> mtu 33136
        index 5 priority 0 llprio 3
        groups: pflog

dhcpcd.conf
logfile /var/log/dhcpcd.log
ipv6only
noipv6rs
duid
persistent
option rapid_commit
require dhcp_server_identifier

script ""

allowinterfaces em0 em1

interface em0
  ipv6rs
  ia_pd 1/::/64 em1/0/64

dhcpcd 9.3.1
Copyright (c) 2006-2020 Roy Marples
Compiled in features: INET ARP ARPing IPv4LL INET6 DHCPv6 AUTH PRIVSEP

Many thanks

Antonino Sidoti