route-table: Store nexthops in linked list. #6624

Job	Run time
osx clang --disable-ssl	1m 32s
libreswan (ubuntu-24.04)	5s
dpdk gcc (ubuntu-24.04)	5s
linux deb no dpdk	6m 50s
linux rpm fedora	4m 4s
build oss-fuzz fuzzers	3m 3s
clang-analyze	20m 28s
linux gcc --disable-ssl	2m 56s
linux clang --disable-ssl	4m 8s
linux gcc c99	2m 37s
linux clang c99	2m 40s
linux gcc test	8m 37s
linux clang address,undefined test	16m 20s
linux gcc test --enable-shared	11m 24s
linux clang test --enable-shared	11m 29s
linux gcc check check-dpdk dpdk	18m 54s
linux clang check check-dpdk dpdk	18m 36s
linux gcc test -ljemalloc	8m 58s
linux clang test -ljemalloc	9m 17s
linux gcc --enable-afxdp	2m 39s
linux clang --enable-afxdp	2m 35s
linux gcc dpdk --enable-shared	4m 0s
linux clang dpdk --enable-shared	3m 38s
linux gcc dpdk-shared	4m 15s
linux clang dpdk-shared	4m 11s
linux gcc dpdk-shared --enable-shared	4m 12s
linux clang dpdk-shared --enable-shared	3m 54s
linux gcc m32 --disable-ssl	2m 41s
linux gcc check-ovsdb-cluster	8m 26s
linux gcc check-kernel -100	10m 48s
linux gcc check-kernel 100-	16m 17s
linux clang address,undefined check-kernel -100	25m 27s
linux clang address,undefined check-kernel 100-	30m 14s
linux gcc check-offloads -100	9m 58s
linux gcc check-offloads 100-	11m 38s
linux gcc dpdk check-system-userspace	12m 40s
linux clang address,undefined dpdk check-system-userspace	30m 14s
linux gcc dpdk check-system-tso	12m 14s
linux gcc dpdk check-afxdp	14m 4s
	6h 6m 8s

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