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Description of problem: a query to getaddrinfo() return IPv6 link local adresses this is wrong! Version-Release number of selected component (if applicable): 0.3-1 How reproducible: always Steps to Reproduce: 1. compile the attached code 2. insert myhostname in the nsswitch.con file 2. call queryHost with the host name 3. Actual results: For all if which are up, the link local adress fe89:... is returned Expected results: link locale adresse shall not be returned! Additional info:#include <sys/types.h> #include <sys/socket.h> #include <netdb.h> #include <arpa/inet.h> #include <stdio.h> #include <errno.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <netdb.h> #include <syslog.h> void printAddr(struct addrinfo *rp) { char ad[80]; struct sockaddr_in *sa; struct sockaddr_in6 *sa6; ad[0] = 0; if ( rp->ai_addr != NULL ) { sa = (struct sockaddr_in*)rp->ai_addr; sa6 = (struct sockaddr_in6*)rp->ai_addr; switch(sa->sin_family) { case AF_INET: inet_ntop(AF_INET, &sa->sin_addr, ad, sizeof(ad)); break; case AF_INET6: inet_ntop(AF_INET6, &sa6->sin6_addr.s6_addr, ad, sizeof(ad)); break; } } printf("%s",ad); } int main(int argc, char **argv) { char *node; struct addrinfo hints; struct addrinfo *res, *rp; int i; int family = AF_UNSPEC; if ( argc < 2 ) return 1; node = argv[1]; if ( argc == 3 ) { switch(argv[2][0]) { case '4': family = AF_INET; break; case '6': family = AF_INET6; break; } } memset(&hints, 0, sizeof hints); hints.ai_family = family; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = 0; hints.ai_flags = AI_PASSIVE; if ( (i=getaddrinfo(node, NULL, &hints, &res)) != 0) { fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(i)); return 1; } for (i = 1,rp = res; rp != NULL; rp = rp->ai_next, i++) { printf("%3d: ",i); printf("Family inet%1s ",rp->ai_family==AF_INET?"":"6"); printAddr(rp); printf("\n"); } freeaddrinfo(res); return 0; }
RFC 4472 Considerations with IPv6 DNS April 2006 2.1. Limited-Scope Addresses The IPv6 addressing architecture [RFC4291] includes two kinds of local-use addresses: link-local (fe80::/10) and site-local (fec0::/10). The site-local addresses have been deprecated [RFC3879] but are discussed with unique local addresses in Appendix A. Link-local addresses should never be published in DNS (whether in forward or reverse tree), because they have only local (to the connected link) significance [WIP-DC2005].
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Fedora 16 changed to end-of-life (EOL) status on 2013-02-12. Fedora 16 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.