A tiny IPv6 router advertisement daemon.

Usage: uradvd [-h] -i <interface> -a/-p <prefix> [ -a/-p <prefix> ... ]
[ --default-lifetime <seconds> ] [ --rdnss <ip> ... ]
[ --valid-lifetime <seconds> ] [ --preferred-lifetime <seconds> ]
[ --max-router-adv-interval <seconds> ] [ --min-router-adv-interval <seconds> ]
[ --version ]

• -i <interface>: interface to listen on (e.g. eth0)
• -a <prefix>: IPv6 prefix (e.g. 2001:db8:1::/32) that can be used for stateless address configuration (SLAAC). The A flag of the IPv6 Router Advertisement message is set.
• -p <prefix>: Similar to -a. But the A and L flags are set. The L flags means that IPv6 addresses within that prefix are on the same L2 subnet. In doubt, use this option over -a.
• --default-lifetime <seconds>: lifetime of the default route (default is 0 => do not use router as a default route)
• --rdnss <ip>: DNS server (e.g. 2001:4860:4860::8888)
• --valid-lifetime <seconds>: The total time the prefix remains available before becoming unusable (default is 86400 seconds => one day)
• --preferred-lifetime <seconds>: The span of time during which the address can be freely used as a source and destination for traffic. Should be less or equal valid-lifetime. (default is 14400 seconds => 4h)
• --max-router-adv-interval <seconds>: The maximum time allowed between sending unsolicited multicast router advertisements from the interface, in seconds. (default is 600 seconds => 10m)
• --min-router-adv-interval <seconds>: The minimum time allowed between sending unsolicited multicast router advertisements from the interface, in seconds. (default is 200 seconds => 3m20s)
• --version: Display the version number of the invoked uradvd.

This program is packaged for OpenWrt and NixOS.