slirp: Allow non-local DNS address when restrict is off
This can be used to set a DNS server to be used by the guest which is different from the one configured on the host. Buglink: https://bugs.launchpad.net/qemu/+bug/1010484 Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com>
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@ -456,7 +456,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
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error_setg(errp, "Failed to parse DNS");
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error_setg(errp, "Failed to parse DNS");
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return -1;
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return -1;
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}
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}
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if ((dns.s_addr & mask.s_addr) != net.s_addr) {
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if (restricted && (dns.s_addr & mask.s_addr) != net.s_addr) {
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error_setg(errp, "DNS doesn't belong to network");
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error_setg(errp, "DNS doesn't belong to network");
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return -1;
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return -1;
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}
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}
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@ -522,7 +522,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
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error_setg(errp, "Failed to parse IPv6 DNS");
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error_setg(errp, "Failed to parse IPv6 DNS");
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return -1;
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return -1;
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}
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}
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if (!in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) {
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if (restricted && !in6_equal_net(&ip6_prefix, &ip6_dns, vprefix6_len)) {
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error_setg(errp, "IPv6 DNS doesn't belong to network");
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error_setg(errp, "IPv6 DNS doesn't belong to network");
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return -1;
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return -1;
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}
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}
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