Postfix's sendmail wants to read /proc/net/if_inet6 but grsecurity denies this access:
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warning: can't open /proc/net/if_inet6 (Permission denied) - skipping IPv6 configuration
fatal: parameter inet_interfaces: no local interface found for ::1
Recorded with strace:
User with restriction on /proc:
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open("/proc/net/if_inet6", O_RDONLY) = -1 EACCES (Permission denied)
User without restriction on /proc
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open("/proc/net/if_inet6", O_RDONLY) = 4
fstat64(4, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
How can I use IPv6 with Postfix without disabling the /proc securitysetting?
btw: why is if_inet6 in /proc?
