1RTPROT_UNSPEC
2RTPROT_REDIRECT
3RTPROT_KERNEL
4RTPROT_BOOT
5RTPROT_STATIC
6RTPROT_GATED
7RTPROT_RA
8RTPROT_MRT
9RTPROT_ZEBRA
10RTPROT_BIRD
11RTPROT_DNROUTED
12RTPROT_XORP
13RTPROT_NTK
14RTPROT_DHCP
15RTPROT_MROUTED
16RTPROT_BABEL
17