Send ip addresses to Xen for info on OpenBSD

xnf-to-host.sh

for ifline in $(dmesg | grep address | sed -E -e 's/^(xnf.+)\ at.*address\ ([a-fA-F0-9:]+)/\1=\2/' | sort); do
  mac=$(echo $ifline | cut -d= -f2)
  if=$(echo $ifline | cut -d= -f1)
  for vif in $(hostctl device/vif); do
    if [ "$mac" = "$(hostctl device/vif/$vif/mac)" ]; then
      ip4=$(ifconfig $if | grep 'inet[^6]' | cut -d ' ' -f2)
      ip6=$(ifconfig $if | grep 'inet6' | cut -d ' ' -f2 | cut -d% -f1)
      if [ -n "$ip4" ]; then
        hostctl attr/eth$vif/ip "$ip4"
      fi
      if [ -n "$ip6" ]; then
        hostctl attr/eth$vif/ipv6/0/addr "$ip6"
      fi
    fi
  done
done