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-rw-r--r--src/tools/irm/irm_ipcp_bootstrap.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/tools/irm/irm_ipcp_bootstrap.c b/src/tools/irm/irm_ipcp_bootstrap.c
index 9a0a30ec..4eeedbd3 100644
--- a/src/tools/irm/irm_ipcp_bootstrap.c
+++ b/src/tools/irm/irm_ipcp_bootstrap.c
@@ -182,11 +182,17 @@ int do_bootstrap_ipcp(int argc,
} else if (matches(*argv, "device") == 0) {
dev = *(argv + 1);
} else if (matches(*argv, "ethertype") == 0) {
- /* NOTE: We might do some checks on this. */
+ /* NOTE: We might do some more checks on strtol. */
if (matches(*(argv + 1), "0x") == 0)
ethertype = strtol(*(argv + 1), NULL, 0);
else
ethertype = strtol(*(argv + 1), NULL, 16);
+ if (ethertype < 0x0600 || ethertype == 0xFFFF) {
+ printf("Invalid Ethertype: \"%s\".\n"
+ "Recommended range: 0xA000-0xEFFF.\n",
+ *(argv + 1));
+ return -1;
+ }
} else if (matches(*argv, "addr") == 0) {
addr_size = atoi(*(argv + 1));
} else if (matches(*argv, "eid") == 0) {