1 files changed, 65 insertions, 0 deletions
diff --git a/results/classifier/118/socket/1837 b/results/classifier/118/socket/1837
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+++ b/results/classifier/118/socket/1837
@@ -0,0 +1,65 @@
+socket: 0.927
+user-level: 0.885
+architecture: 0.824
+device: 0.713
+arm: 0.687
+network: 0.685
+peripherals: 0.625
+PID: 0.609
+graphic: 0.530
+ppc: 0.514
+kernel: 0.460
+performance: 0.442
+files: 0.421
+semantic: 0.352
+vnc: 0.301
+TCG: 0.289
+boot: 0.279
+risc-v: 0.244
+VMM: 0.242
+debug: 0.185
+i386: 0.156
+mistranslation: 0.150
+x86: 0.136
+assembly: 0.130
+virtual: 0.115
+KVM: 0.114
+register: 0.093
+hypervisor: 0.078
+permissions: 0.022
+
+Support IP_MULTICAST_IF socket option in linux-user
+Additional information:
+I've run into this limitation in qemu-aarch64-static version Debian 1:6.2+dfsg-2ubuntu6.12, but from the link above, it doesn't seem to be implemented on master yet.
+
+Here's some source code that demonstrates the failure:
+```
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/ip.h>
+#include <unistd.h>
+#include <assert.h>
+#include <stdio.h>
+
+int main()
+{
+    int fd, ret;
+    struct in_addr addr = {htonl(INADDR_LOOPBACK)};
+
+    fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+    assert(fd >= 0);
+    ret = setsockopt(fd, IPPROTO_IP, IP_MULTICAST_IF, &addr, sizeof(addr));
+    if (ret < 0)
+    {
+        perror("setsockopt failed");
+        return 1;
+    }
+    close(fd);
+    printf("Success!\n");
+    return 0;
+}
+```
+
+When run under qemu, it gives the error `setsockopt failed: Protocol not available`.
+
+It doesn't look like it should be too hard to support (certainly no worse than IP_ADD_MEMBERSHIP). Let me know if I can help with a patch.