36 lines
808 B
Diff
36 lines
808 B
Diff
Index: netcat-openbsd-1.203/netcat.c
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===================================================================
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--- netcat-openbsd-1.203.orig/netcat.c
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+++ netcat-openbsd-1.203/netcat.c
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@@ -1889,6 +1889,21 @@ udptest(int s)
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return 1;
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}
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+static int
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+enable_icmp_errors (int family, int fd)
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+{
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+ int one = 1;
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+ switch (family)
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+ {
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+ case AF_INET:
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+ return setsockopt (fd, SOL_IP, IP_RECVERR, &one, sizeof (one));
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+ case AF_INET6:
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+ return setsockopt (fd, SOL_IPV6, IPV6_RECVERR, &one, sizeof (one));
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+ default:
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+ return -1;
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+ }
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+}
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+
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void
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set_common_sockopts(int s, const struct sockaddr* sa)
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{
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@@ -1982,6 +1997,8 @@ set_common_sockopts(int s, const struct
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errx(1, "can't set IPv6 min hop count (unavailable)");
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#endif
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}
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+ if(uflag)
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+ enable_icmp_errors(af,s);
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}
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int
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