Bug 14169
| Summary: | natd only handles limited number of interfaces in ifreq list | ||
|---|---|---|---|
| Product: | Base System | Reporter: | Jos Vissers <jos> |
| Component: | bin | Assignee: | ru <ru> |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | 3.3-STABLE | ||
| Hardware: | Any | ||
| OS: | Any | ||
Responsible Changed From-To: freebsd-bugs->ru Over to the maintainer :-) State Changed From-To: open->closed Fixed in both -current and -stable. |
Natd can not find its interface from the ifreq list when the total number of interfaces/aliases exceeds a maximum and the nat-ed interface is beyond that maximum. It then responds with "Unknown interface name". I have vx0 with 13 addresses, fxp0 with 1, lp0 with 1, and lo0 with 1 address, ppp0 and ppp1 are not assigned an address and isp0 is the nat-ed inerface. Natd can not find isp0 because the size of the ifreq list is fixed at 32. Fix: Increase the size of the ifreq list to 64, unless there is a reason to keep this at 32. =================================================================== --- natd.c 1999/08/29 15:14:49 1.11.2.6 +++ natd.c 1999/10/06 16:23:13 @@ -704,7 +704,7 @@ static void SetAliasAddressFromIfName (char* ifn) { struct ifconf cf; - struct ifreq buf[32]; + struct ifreq buf[64]; char msg[80]; struct ifreq* ifPtr; int extra; How-To-Repeat: Add a number of aliases to any interfaces before the nat-ed interface. How many depends on the total number of physical interfaces since ifr_addr.sa_len is larger for the link layer interface.