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--- netkit-rwho-0.17-pre20000412/rwhod/rwhod.c.fixbcast	Fri Feb  2 17:03:03 2001
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+++ netkit-rwho-0.17-pre20000412/rwhod/rwhod.c	Fri Feb  2 17:03:38 2001
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@@ -533,6 +533,11 @@
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 			continue;
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 		}
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 		strcpy(np->n_name, ifr->ifr_name);
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+		if (strchr(np->n_name, ':')) {
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+		  /* virtual interface found */
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+		  free((char *) np);
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+		  continue;
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+		}
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 		np->n_addrlen = sizeof (ifr->ifr_addr);
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 		np->n_addr = malloc(np->n_addrlen);
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 		if (np->n_addr == NULL) {