Merge "Properly size response buffer in ifc_act_on_address"

    struct {

        struct nlmsghdr n;

        struct ifaddrmsg r;

        // Allow for IPv6 address, headers, IPv4 broadcast addr and padding.

        char attrbuf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +

                     NLMSG_ALIGN(sizeof(struct rtattr)) +

                     NLMSG_ALIGN(INET6_ADDRLEN) +

                     NLMSG_ALIGN(sizeof(struct rtattr)) +

                     NLMSG_ALIGN(INET_ADDRLEN)];

        // Allow for IPv4 or IPv6 address, headers, IPv4 broadcast address and padding.

        char attrbuf[NLMSG_ALIGN(sizeof(struct rtattr)) + NLMSG_ALIGN(INET6_ADDRLEN) +

                     NLMSG_ALIGN(sizeof(struct rtattr)) + NLMSG_ALIGN(INET_ADDRLEN)];

    } req;

    struct rtattr *rta;

    struct nlmsghdr *nh;

    struct nlmsgerr *err;

    char buf[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +

             NLMSG_ALIGN(sizeof(struct nlmsgerr)) +

             NLMSG_ALIGN(sizeof(struct nlmsghdr))];

    // Get interface ID.

    ifindex = if_nametoindex(name);

        return -saved_errno;

    }

    char buf[NLMSG_ALIGN(sizeof(struct nlmsgerr)) + sizeof(req)];

    len = recv(s, buf, sizeof(buf), 0);

    saved_errno = errno;

    close(s);