NPE in GitDataStore from JavaMail Transport.send() operation

Caused by: java.lang.NullPointerException
        at io.fabric8.git.internal.GitDataStore$FabricGitLocalHostProxySelector.isLocalHost(GitDataStore.java:1545)[81:io.fabric8.fabric-git:1.0.0.redhat-454]
        at io.fabric8.git.internal.GitDataStore$FabricGitLocalHostProxySelector.select(GitDataStore.java:1506)[81:io.fabric8.fabric-git:1.0.0.redhat-454]
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)[:1.7.0_141]
        at java.net.Socket.connect(Socket.java:579)[:1.7.0_141]
        at java.net.Socket.connect(Socket.java:528)[:1.7.0_141]
        at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:288)[93:javax.mail:1.4.4]
        at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:231)[93:javax.mail:1.4.4]
        at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1900)[93:javax.mail:1.4.4]
        at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:638)[93:javax.mail:1.4.4]
        at javax.mail.Service.connect(Service.java:295)[93:javax.mail:1.4.4]
        at javax.mail.Service.connect(Service.java:176)[93:javax.mail:1.4.4]
        at javax.mail.Service.connect(Service.java:125)[93:javax.mail:1.4.4]
        at javax.mail.Transport.send0(Transport.java:194)[93:javax.mail:1.4.4]
        at javax.mail.Transport.send(Transport.java:124)[93:javax.mail:1.4.4]
        ... customer's code