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D47529.1789592464.diff
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diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -520,6 +520,11 @@
error = EHOSTUNREACH;
goto bad;
}
+ if (nh->nh_flags & (NHF_BLACKHOLE | NHF_REJECT)) {
+ IPSTAT_INC(ips_cantforward);
+ error = ENETUNREACH;
+ goto bad;
+ }
ifp = nh->nh_ifp;
mtu = nh->nh_mtu;
rt_update_ro_flags(ro, nh);
diff --git a/tests/sys/netinet/forward.sh b/tests/sys/netinet/forward.sh
--- a/tests/sys/netinet/forward.sh
+++ b/tests/sys/netinet/forward.sh
@@ -259,6 +259,51 @@
vnet_cleanup
}
+atf_test_case "fwd_ip_blackhole" "cleanup"
+fwd_ip_blackhole_head() {
+
+ atf_set descr 'Test blackhole routes'
+ atf_set require.user root
+}
+
+fwd_ip_blackhole_body() {
+ jname="v4t-fwd_ip_blackhole"
+
+ vnet_init
+
+ epair=$(vnet_mkepair)
+ epair_out=$(vnet_mkepair)
+
+ ifconfig ${epair}a 192.0.2.2/24 up
+
+ vnet_mkjail ${jname} ${epair}b ${epair_out}b
+ jexec ${jname} ifconfig lo0 127.0.0.1/8 up
+ jexec ${jname} ifconfig ${epair}b 192.0.2.1/24 up
+ jexec ${jname} ifconfig ${epair_out}b 198.51.100.1/24 up
+ jexec ${jname} sysctl net.inet.ip.forwarding=1
+
+ route add default 192.0.2.1
+
+ atf_check -s exit:2 -o ignore \
+ ping -c 1 198.51.100.2
+ atf_check -s exit:0 -o match:"0 packets not forwardable" \
+ jexec ${jname} netstat -s -p ip
+
+ # Create blackhole route
+ jexec ${jname} /sbin/route add 198.51.100.2 -blackhole -fib 0
+ jexec ${jname} netstat -rn
+
+ atf_check -s exit:2 -o ignore \
+ ping -c 1 198.51.100.2
+ atf_check -s exit:0 -o match:"1 packet not forwardable" \
+ jexec ${jname} netstat -s -p ip
+}
+
+fwd_ip_blackhole_cleanup() {
+
+ vnet_cleanup
+}
+
atf_init_test_cases()
{
@@ -266,6 +311,7 @@
atf_add_test_case "fwd_ip_icmp_gw_fast_success"
atf_add_test_case "fwd_ip_icmp_iface_slow_success"
atf_add_test_case "fwd_ip_icmp_gw_slow_success"
+ atf_add_test_case "fwd_ip_blackhole"
}
# end
diff --git a/tests/sys/netinet6/forward6.sh b/tests/sys/netinet6/forward6.sh
--- a/tests/sys/netinet6/forward6.sh
+++ b/tests/sys/netinet6/forward6.sh
@@ -466,6 +466,50 @@
vnet_cleanup
}
+atf_test_case "fwd_ip6_blackhole" "cleanup"
+fwd_ip6_blackhole_head() {
+
+ atf_set descr 'Test blackhole routing'
+ atf_set require.user root
+}
+
+fwd_ip6_blackhole_body() {
+ jname="v6t-fwd_ip6_blackhole"
+
+ vnet_init
+
+ epair=$(vnet_mkepair)
+ epair_out=$(vnet_mkepair)
+
+ ifconfig ${epair}a inet6 2001:db8::2/64 up no_dad
+
+ vnet_mkjail ${jname} ${epair}b ${epair_out}b
+ jexec ${jname} ifconfig lo0 inet6 ::1/128 up no_dad
+ jexec ${jname} ifconfig ${epair}b inet6 2001:db8::1/64 up no_dad
+ jexec ${jname} ifconfig ${epair_out}b inet6 2001:db8:1::1/64 up no_dad
+ jexec ${jname} sysctl net.inet6.ip6.forwarding=1
+
+ route -6 add default 2001:db8::1
+
+ atf_check -s exit:2 -o ignore \
+ ping6 -c 1 2001:db8:1::2
+ atf_check -s exit:0 -o match:"0 packets not forwardable" \
+ jexec ${jname} netstat -s -p ip6
+
+ # Create blackhole route
+ jexec ${jname} route -6 add 2001:db8:1::2 -blackhole
+
+ atf_check -s exit:2 -o ignore \
+ ping6 -c 1 2001:db8:1::2
+ atf_check -s exit:0 -o match:"1 packet not forwardable" \
+ jexec ${jname} netstat -s -p ip6
+}
+
+fwd_ip6_blackhole_cleanup() {
+
+ vnet_cleanup
+}
+
atf_init_test_cases()
{
@@ -475,6 +519,7 @@
atf_add_test_case "fwd_ip6_gu_icmp_iface_slow_success"
atf_add_test_case "fwd_ip6_gu_icmp_gw_gu_slow_success"
atf_add_test_case "fwd_ip6_gu_icmp_gw_ll_slow_success"
+ atf_add_test_case "fwd_ip6_blackhole"
}
# end

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