eureka-core/src/main/java/com/netflix/eureka/registry/RemoteRegionRegistry.java [138:148]:
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            discoveryApacheClient.addFilter(new GZIPContentEncodingFilter(false));
        }

        String ip = null;
        try {
            ip = InetAddress.getLocalHost().getHostAddress();
        } catch (UnknownHostException e) {
            logger.warn("Cannot find localhost ip", e);
        }
        EurekaServerIdentity identity = new EurekaServerIdentity(ip);
        discoveryApacheClient.addFilter(new EurekaIdentityHeaderFilter(identity));
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eureka-core/src/main/java/com/netflix/eureka/transport/JerseyRemoteRegionClientFactory.java [109:120]:
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                    discoveryApacheClient.addFilter(new GZIPContentEncodingFilter(false));
                }

                // always enable client identity headers
                String ip = null;
                try {
                    ip = InetAddress.getLocalHost().getHostAddress();
                } catch (UnknownHostException e) {
                    logger.warn("Cannot find localhost ip", e);
                }
                EurekaServerIdentity identity = new EurekaServerIdentity(ip);
                discoveryApacheClient.addFilter(new EurekaIdentityHeaderFilter(identity));
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