Red Bear OS
c899b42d36
arp: static ARP entry add/delete via netcfg (ip neigh add/del)
LinkDevice trait gains:
- add_static_neighbor(ip, mac) → Result<(), String>
- remove_neighbor(ip) → bool (true if removed)
EthernetLink implements both with permanent entries (expires_at = i64::MAX/2).
netcfg/ifaces/eth0/arp/ is now:
list → read (existing)
stats → read (existing)
flush → write (existing)
add → write NEW
del → write NEW
Usage:
echo '192.168.1.1 00:11:22:33:44:55' > /scheme/netcfg/ifaces/eth0/arp/add
echo '192.168.1.1' > /scheme/netcfg/ifaces/eth0/arp/del
echo '10.0.0.0/24 gateway-01 11:22:33:44:55:66' > /scheme/netcfg/ifaces/eth0/arp/add
Mirrors Linux 'ip neigh add' / 'ip neigh del'.
MAC format accepts both colon (00:11:22:33:44:55) and dash (00-11-22-33-44-55).
Unicast MAC validation rejects broadcast/multicast addresses.