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2020-03-28llmnrd: don't exit on SO_BINDTODEVICE failureJon Franklin1-1/+1
The -i option requires running llmnrd as root for SO_BINDTODEVICE to work. Packets are still filtered based on interface because only rtnl messages for addresses of the specified interface are considered in iface_nlmsg_change_addr. Instead log a warning only if SO_BINDTODEVICE fails. Signed-off-by: Jon Franklin <jvfranklin@gmail.com> [tk: small adjustments to commit message, check return value of iface_init] Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2017-02-08iface: Merge duplicate codeTobias Klauser1-1/+1
Call iface_recv() from iface_rtnl_enumerate() instead of open-coding it. Reorder code a bit to avoid duplication. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2017-01-10llmnrd: merge rtnl interface event loop into main select() loopsTobias Klauser1-4/+4
Instead of spawming a thread for the sole purpose of watching the rtnl for (presumably) seldom events, just merge the select() for all sockets together in one single main loop. This reduces unnecessary complexity and makes llmnrd no longer require any locking. It also allows us to handle signals in a thread-safe manner (as there aren't any ;) and thus the race condition on exit reported in #20 Closes #20 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-08-17llmnrd: Allow to bind to a specific network interfaceTobias Klauser1-1/+1
Add a command line option -i/--interface which allows to bind the llmnrd sockets to a specific interface. If used, requests are only answered on the specified interface. Example: llmnrd -i eth0 Closes #9 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2016-08-16llmnrd: Don't enumerate and store IPv6 addresses if IPv6 is disabledTobias Klauser1-2/+3
Currently IPv6 addresses are always enumerated via RTNL socket and then stored internally, even if llmnrd was started without the IPv6 command line option '-6'. Even though no queries on AF_INET6 sockets will be answered, this behavior might be confusing. Especially due to messages like: Added IPv6 address fe80::f0eb:aaff:feb3:ae58 on interface tap0 being logged. Explicitely disable IPv6 address enumeration on the RTNL socket to fix this behavior. Closes #8 Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-19llmnrd: Fix address family type in event callbackTobias Klauser1-1/+2
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-18llmnrd: Join IP multicast group on each new interfaceTobias Klauser1-2/+10
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
2015-02-06Initial import, still work in progressTobias Klauser1-0/+30
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