The outer WAN VLAN carries the inner VLAN's frames, whose 4B 802.1Q tag
counts as payload at this layer. To fit the inner's 1508B baby-jumbo
payload plus that tag it needs 1512, not 1508. Harmless before only
because the physical `lan` (9000) absorbed the extra bytes; this makes
the outer's MTU literally reflect what it transports.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
river's WAN moves to a PPPoE session (Digiweb, over VLAN 10 with baby-jumbo
1508 MTU) driven by pppd, with its ip-up/ip-down hooks toggling a new
wan-online.target. stream keeps its DHCP WAN, so the existing 50-wan /
50-wan-ifb networkd config moves out of routing-common into stream, and the
shared consumers (ipsec, ipv6-clear-default-route) now attach to
wan-online.target instead of depending on systemd-networkd-wait-online@wan
directly.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
jackos1998