Something

Index: agent/mibgroup/if-mib/data_access/interface_linux.c
===================================================================
RCS file: /cvsroot/net-snmp/net-snmp/agent/mibgroup/if-mib/data_access/interface_linux.c,v
retrieving revision 1.28.2.6
diff -u -p -r1.28.2.6 interface_linux.c
--- agent/mibgroup/if-mib/data_access/interface_linux.c 8 Sep 2006 15:41:47 -0000      1.28.2.6
+++ agent/mibgroup/if-mib/data_access/interface_linux.c 3 Nov 2006 15:46:06 -0000
@@ -491,6 +491,12 @@ netsnmp_arch_interface_container_load(ne
                      "interface data format error 1, line ==|%s|\n", line);
             continue;
         }
+        /*
+         * ignore ppp interfaces
+         */
+        if (0 == strncmp(stats, "ppp", 3))
+            continue;
+
         if ((scan_expected == 10) && ((stats - line) < 6)) {
             snmp_log(LOG_ERR,
                      "interface data format error 2 (%d < 6), line ==|%s|\n",