forked from freifunk-franken/firmware
Fabian Bläse
b26399283a
When advertising network prefixes gathered from the interface, odhcpd sets the preferred and valid lifetime of those prefixes in the router advertisement to the values set for those addresses on the interface. When prefixes are configured statically (as done in our firmware), this means that odhcp announces these prefixes for SLAAC with infinite preferred and valid lifetimes. While this does not seem like a problem at first, it hurts significantly when configuration errors are made or cables are plugged into the wrong ports, because those addresses never vanish from devices anymore, as long as they are powered up. Also, it makes it impossible to change prefixes without gracefully shutting down the RA server, so it can announce zero lifetimes for previously announced prefixes. Sadly, odhcp does not have an option to configure these lifetimes explicitly, but it is possible to limit these lifetimes to the lease time configured and used for the DHCP functionality of odhcpd. Enable the appropriate 'ra_useleasetime' option to reduce impact of the before mentioned problems. Fixes: #142 Signed-off-by: Fabian Bläse <fabian@blaese.de> Reviewed-by: Christian Dresel <freifunk@dresel.systems> Reviewed-by: Robert Langhammer <rlanghammer@web.de> |
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| .. | ||
| alfred-json | ||
| fff-alfred | ||
| fff-alfred-monitoring-proxy | ||
| fff-babel | ||
| fff-babel-bird2 | ||
| fff-babeld | ||
| fff-base | ||
| fff-batman-adv | ||
| fff-boardname | ||
| fff-config | ||
| fff-dhcp | ||
| fff-fastd | ||
| fff-firewall | ||
| fff-hoods | ||
| fff-hoodutils | ||
| fff-layer3 | ||
| fff-layer3-config | ||
| fff-layer3-snat | ||
| fff-macnock | ||
| fff-mqtt | ||
| fff-mqtt-monitoring | ||
| fff-network | ||
| fff-node | ||
| fff-nodewatcher | ||
| fff-ra | ||
| fff-random | ||
| fff-simple-tc | ||
| fff-support | ||
| fff-sysupgrade | ||
| fff-timeserver | ||
| fff-uradvd | ||
| fff-vpn-select | ||
| fff-vxlan-node-vpn | ||
| fff-web-hood | ||
| fff-web-mqtt | ||
| fff-web-ui | ||
| fff-wireguard | ||
| fff-wireless | ||