RTPROT_UNSPEC
RTPROT_REDIRECT
RTPROT_KERNEL
RTPROT_BOOT
RTPROT_STATIC
RTPROT_GATED
RTPROT_RA
RTPROT_MRT
RTPROT_ZEBRA
RTPROT_BIRD
RTPROT_DNROUTED
RTPROT_XORP
RTPROT_NTK
RTPROT_DHCP
RTPROT_MROUTED
RTPROT_BABEL