After years of trouble-free operation of the following dhcpcd setup, it fails with "SIOCSPFXFLUSH_IN6: No buffer space available"
This problem arose after upgrading to dhcpcd 10.3.0 on my FreeBSD 14.3 installation.
quiet
ipv6only
noipv6rs
release
background
vendorclassid
slaac private
clientid
allowinterfaces ng0
nohook test,hostname,resolv.conf,ntp.conf
option interface_mtu
option classless_static_routes
require dhcp_server_identifier
interface ng0
ipv6rs
ia_pd 1/::/56 bridge0/0/64