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--- a/src/usr.bin/netstat/inet.c
+++ b/src/usr.bin/netstat/inet.c
@@ -356,6 +356,16 @@
tp = &((struct xtcpcb *)xig)->xt_tp;
inp = &((struct xtcpcb *)xig)->xt_inp;
so = &((struct xtcpcb *)xig)->xt_socket;
+ /* :XXX: work around a kfreebsd 9->10 ABI break:
+ * struct tcpcb gained a u_int, so on kfreebsd-9
+ * the xt_socket member starts earlier */
+ if (((struct xtcpcb *)xig)->xt_len == 900) {
+ /* kfreebsd-i386 9.0 kernel */
+ so = &((struct xtcpcb *)((char *)xig-4))->xt_socket;
+ } else if (((struct xtcpcb *)xig)->xt_len == 1208) {
+ /* kfreebsd-amd64 9.0 kernel */
+ so = &((struct xtcpcb *)((char *)xig-8))->xt_socket;
+ }
} else {
inp = &((struct xinpcb *)xig)->xi_inp;
so = &((struct xinpcb *)xig)->xi_socket;
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