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ip/il: dont attept to connect over IPv6, IL only supports IPv4 packets

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This commit is contained in:
cinap_lenrek 2016-08-14 23:07:10 +02:00
parent d41ca0d32c
commit 58a0db935c
1 changed files with 6 additions and 0 deletions
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6
sys/src/9/ip/il.c
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@ -251,6 +251,9 @@ ilconnect(Conv *c, char **argv, int argc)
e = Fsstdconnect(c, argv, argc);
if(e != nil)
return e;
if(c->ipversion != V4)
return "only IP version 4 supported";
return ilstart(c, IL_CONNECT, fast);
}
@ -548,6 +551,9 @@ iliput(Proto *il, Ipifc*, Block *bp)
ih = (Ilhdr *)bp->rp;
plen = blocklen(bp);
if(plen > 0 && (ih->vihl&0xF0)!=IP_VER4)
goto raise; /* ignore non V4 packets */
if(plen < IL_IPSIZE+IL_HDRSIZE){
netlog(il->f, Logil, "il: hlenerr\n");
ipriv->stats[HlenErrs]++;