Check we have allocated IPv6 resources before checkings RA's.

Fixes [1e770ea479].

diff --git a/ipv6nd.c b/ipv6nd.c
index 1dcb24a66fe66f446748ad117417397265f6d20d..794ef9dcc4115880877d7fa620c4af7c70980fce 100644 (file)
--- a/ipv6nd.c
+++ b/ipv6nd.c
@@ -397,6 +397,9 @@ ipv6nd_addrexists(struct dhcpcd_ctx *ctx, const struct ipv6_addr *addr)
        struct ra *rap;
        struct ipv6_addr *ap;
 
+       if (ctx->ipv6 == NULL)
+               return 0;
+
        TAILQ_FOREACH(rap, ctx->ipv6->ra_routers, next) {
                TAILQ_FOREACH(ap, &rap->addrs, next) {
                        if (addr == NULL) {