Available configuration variables:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CONFIG_AUTO_ROUTES Device routes are added automagically by the kernel
CONFIG_SELF_CONSCIOUS We're able to recognize whether route was installed by us
CONFIG_MULTIPLE_TABLES The kernel supports multiple routing tables
CONFIG_ALL_TABLES_AT_ONCE Kernel scanner wants to process all tables at once
CONFIG_MC_PROPER_SRC Multicast packets have source address according to socket saddr field
CONFIG_RESTRICTED_PRIVILEGES Implements restricted privileges using drop_uid()
CONFIG_UNIX_IFACE Use Unix interface scanner
CONFIG_UNIX_SET Use Unix route setting
CONFIG_UNIX_DONTROUTE Use setsockopts DONTROUTE (undef for *BSD)
CONFIG_SKIP_MC_BIND Don't call bind on multicast socket (def for *BSD)
CONFIG_LINUX_SCAN Use Linux /proc/net/route scanner
CONFIG_ALL_MULTICAST krt-iface: All devices support multicasting (i.e., ignore IFF_MULTICAST)
CONFIG_UNNUM_MULTICAST krt-iface: We support multicasts on unnumbered PtP devices
CONFIG_LINUX_MC_MREQN Linux: Use struct mreqn for multicasting
CONFIG_LINUX_MC_MREQ Linux: Use struct mreq
CONFIG_LINUX_MC_MREQ_BIND Linux: Use struct mreq and SO_BINDTODEVICE
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