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- Added error handling for mtu with IPv6 support
This commit is contained in:
Tristan Brice Velloza Kildaire 2024-12-15 18:07:19 +02:00
parent b74256bccc
commit 111621791a
1 changed files with 13 additions and 0 deletions
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13
tncattach.c
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@ -331,6 +331,13 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
printf("Error: Invalid MTU specified\r\n\r\n");
argp_usage(state);
}
if(arguments->set_ipv6 || arguments->link_local_v6)
{
printf("IPv6 and/or link-loal IPv6 was requested, but the MTU provided is lower than 1280\n");
exit(EXIT_FAILURE);
}
break;
case 't':
@ -489,6 +496,9 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
ipv6_addr = malloc(strlen(arguments->ipv6)+1);
strcpy(ipv6_addr, arguments->ipv6);
printf("v6 now: %s\n", ipv6_addr);
printf("MTU was %d, setting to minimum of %d as is required for IPv6\n", arguments->mtu, 1280);
arguments->mtu = 1280;
break;
case 'l':
@ -498,6 +508,9 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
exit(EXIT_FAILURE);
}
arguments->link_local_v6 = true;
printf("MTU was %d, setting to minimum of %d as is required for IPv6\n", arguments->mtu, 1280);
arguments->mtu = 1280;
break;
case 'n':