[patch] Disable IFA_F_NOPREFIXROUTE for kernels older than 4.3.0

dhcpcd-linux.diff (text/plain), 945 bytes, created by Roy Marples on 2018-02-19 09:20:46 UTC

diff --git a/src/if-linux.c b/src/if-linux.c
index e802366a..85c4711e 100644
--- a/src/if-linux.c
+++ b/src/if-linux.c
@@ -40,6 +40,7 @@
 #include <linux/netlink.h>
 #include <linux/sockios.h>
 #include <linux/rtnetlink.h>
+#include <linux/version.h>
 
 #include <arpa/inet.h>
 #include <net/if.h>
@@ -1455,7 +1456,7 @@ if_address(unsigned char cmd, const struct ipv4_addr *addr)
 {
 	struct nlma nlm;
 	int retval = 0;
-#if defined(IFA_F_NOPREFIXROUTE)
+#if defined(IFA_F_NOPREFIXROUTE) && LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)
 	uint32_t flags = 0;
 #endif
 
@@ -1480,7 +1481,7 @@ if_address(unsigned char cmd, const struct ipv4_addr *addr)
 		add_attr_l(&nlm.hdr, sizeof(nlm), IFA_BROADCAST,
 		    &addr->brd.s_addr, sizeof(addr->brd.s_addr));
 
-#ifdef IFA_F_NOPREFIXROUTE
+#if defined(IFA_F_NOPREFIXROUTE) && LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0)
 	if (nlm.ifa.ifa_prefixlen < 32)
 		flags |= IFA_F_NOPREFIXROUTE;
 	if (flags)