@@ -18,6 +18,9 @@ struct ifaddrmsg {
* It makes no difference for normally configured broadcast interfaces,
* but for point-to-point IFA_ADDRESS is DESTINATION address,
* local address is supplied in IFA_LOCAL attribute.
+ *
+ * IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags.
+ * If present, the value from struct ifaddrmsg will be ignored.
*/
enum {
IFA_UNSPEC,
@@ -45,7 +48,8 @@ enum {
#define IFA_F_DEPRECATED 0x20
#define IFA_F_TENTATIVE 0x40
#define IFA_F_PERMANENT 0x80
-#define IFA_F_MANAGETEMPADDR 0x0100
+#define IFA_F_MANAGETEMPADDR 0x100
+#define IFA_F_NOPREFIXROUTE 0x200
struct ifa_cacheinfo {
__u32 ifa_prefered;
@@ -82,7 +82,7 @@ static void usage(void)
fprintf(stderr, " tentative | deprecated | dadfailed | temporary |\n");
fprintf(stderr, " CONFFLAG-LIST ]\n");
fprintf(stderr, "CONFFLAG-LIST := [ CONFFLAG-LIST ] CONFFLAG\n");
- fprintf(stderr, "CONFFLAG := [ home | nodad | mngtmpaddr ]\n");
+ fprintf(stderr, "CONFFLAG := [ home | nodad | mngtmpaddr | noprefixroute ]\n");
fprintf(stderr, "LIFETIME := [ valid_lft LFT ] [ preferred_lft LFT ]\n");
fprintf(stderr, "LFT := forever | SECONDS\n");
@@ -707,6 +707,10 @@ int print_addrinfo(const struct sockaddr_nl *who, struct nlmsghdr *n,
ifa_flags &= ~IFA_F_MANAGETEMPADDR;
fprintf(fp, "mngtmpaddr ");
}
+ if (ifa_flags & IFA_F_NOPREFIXROUTE) {
+ ifa_flags &= ~IFA_F_NOPREFIXROUTE;
+ fprintf(fp, "noprefixroute ");
+ }
if (!(ifa_flags & IFA_F_PERMANENT)) {
fprintf(fp, "dynamic ");
} else
@@ -1133,6 +1137,9 @@ static int ipaddr_list_flush_or_save(int argc, char **argv, int action)
} else if (strcmp(*argv, "mngtmpaddr") == 0) {
filter.flags |= IFA_F_MANAGETEMPADDR;
filter.flagmask |= IFA_F_MANAGETEMPADDR;
+ } else if (strcmp(*argv, "noprefixroute") == 0) {
+ filter.flags |= IFA_F_NOPREFIXROUTE;
+ filter.flagmask |= IFA_F_NOPREFIXROUTE;
} else if (strcmp(*argv, "dadfailed") == 0) {
filter.flags |= IFA_F_DADFAILED;
filter.flagmask |= IFA_F_DADFAILED;
@@ -1354,6 +1361,8 @@ static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
ifa_flags |= IFA_F_NODAD;
} else if (strcmp(*argv, "mngtmpaddr") == 0) {
ifa_flags |= IFA_F_MANAGETEMPADDR;
+ } else if (strcmp(*argv, "noprefixroute") == 0) {
+ ifa_flags |= IFA_F_NOPREFIXROUTE;
} else {
if (strcmp(*argv, "local") == 0) {
NEXT_ARG();
Signed-off-by: Thomas Haller <thaller@redhat.com> --- Hi, this additional patch is based on the previous two patches v2, so I reply to this email. It's related to the discussion about adding a flag IFA_F_NOPREFIXROUTE to suppress creation of prefix routes (see thread "[patch iproute2 v2 0/2] add support for IFA_F_MANAGETEMPADDR", from Thu, 2 Jan 2014 16:34:37 +0100). include/linux/if_addr.h | 6 +++++- ip/ipaddress.c | 11 ++++++++++- 2 files changed, 15 insertions(+), 2 deletions(-)